Wikipedia is claiming: (B7A Grace) was intended for use aboard a new generation of Taihō-class carriers, the first of which was laid down in July 1941. Because the deck elevators on the Taihōs had a larger square area than those of older Japanese carriers, the longstanding maximum limit of 11 m (36 ft) on carrier aircraft length could now be lifted.
I think this is simply wrong? Older carriers had one elevator big enough to lift Grace. Plane's length was 11,49 meters, and wingspan 14,4 meters (but it had folding wingtips). For example Hiryu's largest elevator was 13,0 x 15,99 meters, Soryu's 11,49 x 15,99 meters etc.